All of the documentation seems to point to me making a post sticky and setting a feature image of 840 to make the slider active.
I think this might have changed in the most recent theme release. It now has a slider menu which allows you to specify what images you want and what you want them to link to.
Using the slider menu I've managed to get the outline of the slider to appear but not the images themselves. I've tried making the posts sticky (e.g. the one about olympic sausages is currently sticky and at the top).
The blog is http://www.sausagefans.co.uk
Hopefully someone can give me some pointers!
The blog I need help with is sausagefans.co.uk.